In news that is shocking, shocking, I tell you, we find that teens who smoke tobacco are far more likely to smoke pot than teens who don’t. My favorite quote, from Joseph Califano, Jr. President of National Center on Addiction and Substance Abuse, Columbia University: "If kids are regularly smoking, you should be concerned they are smoking pot." I would have thought that if kids are regularly smoking, you should be concerned about that on its own merits.